Screw cap or closure.



N0.743,1a9. PATENTED Nov.`3,1f9ls.

J. o. POTTER. SCREW GAP 0R GLOSURE.

APPLICATION FILED APB. 30. 1903.

NO MODEL.

mun

g @y 1li i D Patented November 3, 1903.

PATENT OFFICE.

JAMES CRAWFORD POTTER, OF PROVIDENCE, RHODE ISLAND.

SCREW AP on oLosURE.

.SPECIFICATION forming part of Letters Patent No. 743,189, datedNovember s, 1903.

. Application filed April 30, i903. Serial No. 154.912. (No model.)

.To all whom t mrtg/"concern:

Be it known that I, JAMES CRAWFORD Por- TER, a citizen of the UnitedStates, and a resident of Providence, `in the county of Providence andState of, ,Rhode Island, have invented certain new and usefulImprovements "inuScrew Caps or Closures, of which the following is aspecification.

The subject of the present invention is an improved screw-cap fornozzles, and has reference more particularly to the type of cap havingachain connection with a fixed part for insuring-the convenientretention of the cap when detached from the nozzle and preventing saidcap-from becoming lost or mislaid. 1 l' f The more prominent object ofthe invention is to obtain a highly-secure engagement with the cap in asimple, efficient, and cornparatively inexpensive manner.

With the above and other purposes in View the invention comprisesgenerally the feature of a supplemental or auxiliary section permanentlysecured on the top of the cap and carrying the eye connection for thechain, said section serving to greatly strengthen said connection aswell as reinforce the cap.

There are other important features and details connected with the novelcap, which, as well as those alluded to, are clearly set forth in thesubsequent extended description.

In the accompanying drawings, forming part of this specification, Figurel is a fragmental View, partly sectioned, of the upper portion of asheet-metal can having my invention combined therewith. Fig. 2 is avertical sectional view of the cap disclosed in Fig. 1 and representingthe cap'on a larger scale. Fig. is a plan view of said cap. Fig. 4 is aview somewhat similar to Fig. 2, but illustrating a cap embodyinganother form of my invention. p

Similar reference characters are employed to designate correspondingparts throughout the several figures of the drawings where they occur.

In providing screw closures or caps for nozzles in many instances it isdesirable to permanently attach the cap by a chain. to some fixedportion, so that when the cap is unscrewed from the nozzle it willremain in such proximity as to be always handy when it is to be againscrewed in engagement with the nozzle. Generally the class of articleswith which said nozzles and caps are employed#- as, for instance,oil-cans, Snc-is such that the caps are usually pressed or spun up froma comparatively soft sheet metal, such @as zinc or tin, and secured tothe top thereof, generally by soldering, is an eye, to which one end ofthe connecting-chain is attached. Inasmuch as the cap is frequentlysubjected to considerable strain and pull, thereis a liability of theeye beingpulled from thecap, and this will be true to some exteuteveu ifthe eye is not soldered to the top, `but is passed th rough an openingin thefcaptop and engaged at the under side of the latter.

By my invention I obviate the objections noted and provide a durable andefficient chain connection which besides being extremely simple willserve to greatly reinforce and strengthen the cap.

Referring now more especially to Figs. l to 3, inclusive, A indicatesthe upper portion of an oil-can, it not being deemed necessary toillustrate the ears and bail. The sloping top A of this can has acentral opening presented by a short tapering flange a, to which theoverlapping base b of the nozzle B is secured by soldering. The nozzleembodies coarse screw-threads pressed or spun therein in a manner wellknown.

The cap C comprises the cylindrical body c, with threads suitable forengaging those of the nozzle, the cap being formed of one piece of metal-and including the closed top c. Mounted on the top c' of the cap is adisk or circular section D, which is permanently secured to the top,preferably by soldering, said section being slightly dished on its underside, providing a shallow space d between the top c and said section.The latter is centrally provided with a small perforation through whichpass the free portions e e, constituting the shank of a circular wireeye E, the terminais-c' of the shank portions being oppositely bent tolie within the space cl, and thereby serve to securely attach the eye tothe cap, but permit its swiveling movement relative thereto. It will beconvenient, of course, to engage the eye with the section D beforesecuring the latter in position upon the cap-top. Inasmucli as this typeof cap is ordinarily IOO made of a soft sheet metal, such as zinc ortin, I prefer to make the disk or section D of a metal more durable andrigid in characteras, for instance, brass.

Manifestly the chain F, which is engaged at one end with the eye E, canhave its other end permanently attached to any suitable fixed part,according to the particular application of the invention. In Fig. 1 Ihave represented such permanent attachment as being effected by a smallclip f, soldered on the can-top.

From the foregoing description it will be readily appreciated that a capand chain connection embodying my invention is not only simple, butextremely strong and comparatively inexpensive. Moreover, the swivelingrelation of the eye E prevents the chain from becoming objectionablyfouled or twisted.

I It will be readily comprehended that the novel cap and chainconnection is equally adapted for service in connection with threadednozzles in all other instances Where the same are employed.

In Fig. 4 is disclosed a cap C embodying another form of the invention.In this arrangement the disk or section E by being considerably moreconcaved than is the somewhat similar portion in the previous figures istherefore adapted to be made of a grade of sheet metal somewhat similarto that employed for the cap proper, the increased concavity impartingadditional strength, while small openings e2 in said section E',adjacent to the cap-top c2, prevents any tendency to the formation of avacuum beneath said section,besides facilitating its being brought intoproper shape during manufacture.

I do not wish to be understood as limiting myself to either of theprecise arrangements shown and described, but reserve the right to allsuch modifications as may be fairly Within the scope of my invention.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A screw cap or closure of the character described,comprising abodyand top of highlyductile metal, and an independent section of a morerigid metal secured fixedly to said top, and extending over the majorsurface thereof, and a vertically-projecting eye connected to saidsection.

2. A sheet-metal screw cap or closure pro- JAMES CRAWFORD POTTER.

Witnesses:

BERNARD W. McELRoY, PATRICK H. HAGKETT.

